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Finding the Third Proportional to 611.72 and 935.30

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Solution

The third proportional to 611.72 and 935.30 is: 1,430.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.72 : 935.30 = 935.30 : x
  2. Step 2: Convert to fraction form
    611.72/935.30 = 935.30/x
  3. Step 3: Cross multiply
    611.72x = 935.30 × 935.30
  4. Step 4: Simplify right side
    611.72x = 874,780.24
  5. Step 5: Solve for x
    x = 874,780.24/611.72
  6. Step 6: Final answer
    x = 1,430.04

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.